Gov. Jon S. Corzine remained heavily sedated and on a ventilator early Saturday, but doctors said he continued to recuperate from serious injuries sustained in a motor vehicle accident on the expressway this week. Meanwhile, authorities continued to search for the red pickup truck whose driver apparently caused Thursday night's crash in Galloway Township, according to AP. Corzine _ who was riding in a sport utility vehicle driven by a state trooper and headed to a meeting between radio show host Don Imus and the Rutgers women's basketball team _ apparently was not wearing his seat belt, as required by law. The crash occurred when the SUV was hit by another vehicle that swerved to avoid the pickup truck, sending the SUV into a guard rail. Witness Bobby Juska said he saw Corzine's feet hanging out the passenger side window. «He was screaming, 'My leg! My leg!» Juska said. The governor's femur bone was broken in two places, and it protruded through his skin. He also suffered a broken sternum, 12 broken ribs, a head laceration and a minor fracture on a lower vertebra, according to doctors at Cooper University Hospital in Camden, where he was flown by helicopter after the crash. His injuries were not considered life-threatening, but doctors say the governor faces lengthy rehabilitation. And it will likely be at least three to six months before he can walk normally. He was moved to the trauma intensive care unit after surgery Thursday night and remained in critical but stable condition early Saturday. He was in undergoing surgery again Saturday and had another scheduled Monday. Corzine, 60, did not suffer any brain damage in the crash. But doctors said he won't be able to resume his duties as governor for several days, if not weeks. Senate President Richard Codey officially became acting governor Thursday evening after getting a fax from Corzine's office saying the governor had been injured. -- SPA